Observatory · observe first
Follow the allocation change
Matched S&P 500 members → sector → industry → sub-industry → company. Each step uses the same percentage points.
Historical time machine
Historical observation
20182026
1 · Sector
Weight and 12M allocation change
2 · Industry
Inside Materials
Industrial Gases0.83%+0.62 ppCommodity Chemicals0.20%+0.20 ppCopper0.08%-0.07 ppPaper & Plastic Packaging Products & Materials0.19%-0.06 ppSpecialty Chemicals0.81%-0.05 ppMetal, Glass & Plastic Containers0.12%+0.04 ppSteel0.09%-0.04 ppGold0.16%+0.03 ppFertilizers & Agricultural Chemicals0.10%-0.02 ppConstruction Materials0.17%-0.01 pp
3 · Sub-industry
Inside Specialty Chemicals
Specialty Chemicals · weight
0.81%
Industry change · 12M
-0.05 pp
Specialty Chemicals · contribution
-0.051 pp
Company participation
83%
of industry constituents above their 6M weight average
4 · Companies driving this sub-industry
May 2019 · sorted by absolute contribution to 12-month change
| Company | Country | Market cap | Universe weight | 3M contribution | 12M contribution | 12M price return | Above 6M weight average |
|---|---|---|---|---|---|---|---|
| LyondellBasell → LYB | United States | $27.5bn | 0.160% | -0.024 pp | -0.107 pp | -31.0% | Yes |
| Ecolab → ECL | United States | $53.1bn | 0.309% | +0.026 pp | +0.059 pp | +30.5% | Yes |
| International Flavors & Fragrances → IFF | United States | $14.4bn | 0.084% | +0.005 pp | +0.026 pp | +13.4% | Yes |
| Albemarle Corporation → ALB | United States | $6.7bn | 0.039% | -0.017 pp | -0.024 pp | -31.3% | No |
| PPG Industries → PPG | United States | $24.7bn | 0.144% | -0.009 pp | -0.009 pp | +5.5% | Yes |
| Sherwin-Williams → SHW | United States | $12.9bn | 0.075% | -0.002 pp | +0.003 pp | +11.6% | Yes |
Company contributions use weights among matched S&P 500 members and add through each level without rescaling. Companies without matched shares and prices are omitted. These observations do not establish official index weights or actual fund flows.